[Firadeoclus]

This is a really interesting system, and I'm excited to give this a try!

Without knowing whether the following cases would actually be useful/relevant, I'm curious if these things apply to Unison:

- Is there a way to "pin" a symbol to a specific hash/version so it won't automatically update when the referred function gets a change? I.e. I could write: A = B@ ++ "world" and when I store and retrieve it, it becomes (example syntax): A = B@a3yx ++ "world"

- Is there a way to refer to a function/symbol by name rather than by hash? I.e. a call site which uses B by looking up which hash is currently associated with the name "B", such that if I do two simultaneous renames, B->D and C->B, the code would now refer to the function previously known as C?

- Are there ways in which the way function updates "bubble up" through the codebase (I assume updating a function means updating every function that calls it, recursively) could become a problem? It would seem that changing one little function could have a knock-on effect that requires re-hashing most of the codebase.